Revert 150342 "Implement filter primitive subregion for referenc..."

trunk/Source/core/platform/graphics/filters/FEGaussianBlur.cpp

Index: trunk/Source/core/platform/graphics/filters/FEGaussianBlur.cpp
===================================================================
--- trunk/Source/core/platform/graphics/filters/FEGaussianBlur.cpp	(revision 150368)
+++ trunk/Source/core/platform/graphics/filters/FEGaussianBlur.cpp	(working copy)
@@ -260,8 +260,16 @@
 
 void FEGaussianBlur::determineAbsolutePaintRect()
 {
-    FloatRect absolutePaintRect = mapRect(inputEffect(0)->absolutePaintRect());
+    unsigned kernelSizeX = 0;
+    unsigned kernelSizeY = 0;
+    calculateKernelSize(filter(), kernelSizeX, kernelSizeY, m_stdX, m_stdY);
 
+    FloatRect absolutePaintRect = inputEffect(0)->absolutePaintRect();
+
+    // We take the half kernel size and multiply it with three, because we run box blur three times.
+    absolutePaintRect.inflateX(3 * kernelSizeX * 0.5f);
+    absolutePaintRect.inflateY(3 * kernelSizeY * 0.5f);
+
     if (clipsToBounds())
         absolutePaintRect.intersect(maxEffectRect());
     else
@@ -270,19 +278,6 @@
     setAbsolutePaintRect(enclosingIntRect(absolutePaintRect));
 }
 
-FloatRect FEGaussianBlur::mapRect(const FloatRect& rect, bool)
-{
-    FloatRect result = rect;
-    unsigned kernelSizeX = 0;
-    unsigned kernelSizeY = 0;
-    calculateKernelSize(filter(), kernelSizeX, kernelSizeY, m_stdX, m_stdY);
-
-    // We take the half kernel size and multiply it with three, because we run box blur three times.
-    result.inflateX(3 * kernelSizeX * 0.5f);
-    result.inflateY(3 * kernelSizeY * 0.5f);
-    return result;
-}
-
 void FEGaussianBlur::applySoftware()
 {
     FilterEffect* in = inputEffect(0);